Carbureter.



W. 'F. Hgmmm v GARBURE'rs-u. APPLIUATION FILED FEBJO, 1912.

1',1 15,543. Patented Nov. 3, 1914.

3 SHEETSSHBET 1.

W. P. HUGUBLET.

GARBURBTER. APPLICATION FILED Immo, 1912.

*Patented Nov. 3, 1914.

3 SHEETS-SHEET 2.

Illl di' W. P. HUGUELBT.

OARBURETER.

APPLICATION IILBD Immo, 1912.

Patented ov. 3, 19.14.

3 SHEETS-SHEET 3` wlrlmmu www;

` Illllll WILLIAM P. HUGUELET, 0F CHICAGO, ILLINOIS.

CARB URETER.

Specification of Letters Patent.

Patented Nov. e, 1914.

Application led February 10, l1912. Serial N o. 676,918.

T0 all whom 'it may concern:

Be it known that I, WILLIAM P. IIUGUE- LET, citizen of the United States, residing at Chicago, -in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Carbureters for Internal-Combustion Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. v

This invention has for its object to pro-y vide an eiiicient carburet'er for internal coml of the air conduit bustion engines, and consists 'in the features4 of construction and combinations ofparts hereinafter fully described and claimed.

In the accompanying drawings illustrating the invention, Figure 1-fis a view 1n central vertical longitudinal section of a carbureter embodying, my invention. Fig. -2- is a view partly in plan and partly 1n horizontal section on the line 2-2 o f Fig. Fig. -3- is a horizontal sectlon'on the line 3 3 of Fig. -1-. Fig. `L1 is al fragmentary detail vertical section on the line 4 4 of Fig. -1-. Fig. -5- 1s a fragmentary detail perspective view of the core showing a plurality of concentric passages for air and the yhelical ribs or anges which serve to conduct the air through the same. Fig. -6- is a frag) mentary detail sectional view on the line l6--6 of Fig. 1 showing the means employed for maintaining 'an adjustablenut in position. Fig. -7- is a fragmentary detail sectional view on the line 7-7 of Fig. 2t-

The main object of the invention is to provide a carbureter of the class described in which the richness of admixed hydro-carbon vapor and air or carbureted air drawn into the engine may be regulated to a very nice degree, and in which, at the same time, a thorough admixture of air and vapor is insured whereby efficiency and economy of the engine. are promoted.

The carbureter comprises the usual float chamber 1 connect-ed by means of a pipe 2 with a source of supply of hydro-carbon liquid, the latter passing into said chamber 1 through the opening 3 controlled by the` valve 4 mounted upon the stem of the loat 5 contained in said chamber 1 and adapted, when said chamber l is filled to the requisite nozzle, the

through and being guided or normal level liquid, to shut off further supply thereto.

Adjacentthe chamber 1 and communicating therewith is a discharge nozzle 6 for the hydro-carbon liquid into the air passages or chambers of the carbureter. The said nozzle 6 is controlled by means of the pin valve 7 seated upon the discharge end of said stem of said valve being provided between its ends with a disk 8 against which a helical. compression spring 9 bears, the latter bearing at ,its other end against an adjustable'screw 10 having a central longitudinal opening therethrough and which is mounted in a horizontal wall l1 of the carbureter between the chamber land the air chamber 12 and conduitchamber 13 of the device, the stem of said valve 7 passing in the opening in said screw 10. The said -nozzle 6 is disposed in an air passage 15 which communicates at one end with the air inlet 16 controlled by the valve 17 and at its other end with the air chamber 12. The latter is substantially rectangular in form and is prothree. of which isa circular opening. Two

with thel hydro-carbon.

of these .openings are adapted to be maintained normally closed by means of plates 18 suitably secured by means of screws, or the like, to said walls, while in one of said openings a ring 19 is adapted to be receivedv which carries a centrally disposed hub 20 externally threaded and through which -the stem v21 of a valve 22 passes and is guided. The latter consists of a fiat disk seating at its peripheral portion upon the inner face of said ring 19. Said valve is maintained normally on its seat by means ofthe spiral compression spring 23 interposed between a. colof the valve stem 21 lar` 24 on the outer end and an adjusting nut 25 mounted upon the sai'dhub 2 0. The said nut 25 is provided externally with a plurality of longitudinal grooves or recesses in which the free end of a, flat spring 26 engages, cured at its other end in 27 of said ring 19. Said nut serves to regu late theV pressure exerted by said spring 23 on said valve 22, as will be obvious.

The air admitted through the air passage 15 and carrying the hydro-carbon vapors passes into the air chamber 12 through the opening 28, or, is closed the hydro-carbon vapor discharged a lug or projection the latter being sein the event that the. valve 17 into said air passage 15 from said nozzle 6 will pass into saidair chamber 12 and be thereadmixcd with? the air enterin said chamber through the opening control ed by the valve 22. The admixed air and vapor or carbureted air passes thence through the air conduit 13 and thence through the pipe or conduit 29 to the engine cylmder. The said air passage or conduit 13 is controlled by means of a throttle valve 30 mounted on a stem 31 adapted to be connected by means of a crank 32 with an opening lever,l said valve-controlled end portion of said passage being of'less diameter than the lower portion thereof. In the latter there is mounted a series of concentric tubes 33, 34 and 35 of successively larger diameter so as to provide annular air passages between the tube 33 and the tube 34 and between the tube 34 and the tube 35. The said tubes 33 and 34 are provided externally with oppositely trained helical ribs 36 and 37 which are adapted to. cause air passing through the annular spacesl occupied by said ribs to travel helically into the valve-controlled end ortion of said conduit 13. Each of said lielical ribs extends through an arc of substantially 360 degrees, but this arc may be' varied without materially affecting the operation of the device.

The inner diameter of the tube 35 is preferably equal to the inner diameter of the valve-controlled end portion of the conduit 13 and at its upper end abuts against an annular shoulder 38 to which it is secured by solderin or .other suitable means to provide a flui -tight joint.- At its lower end said tube 35 is provided with an annular flange 39 which is equal in outer diameter to the inner diameter of the lower end portion of the conduit 13 and is secured in the latter by solderin space 40 formed between the tube 35 and the circumferential wall of the lower end portion of thev conduit 13 constitutes a heating or cooling chamber which may be connected ,by means of the fianged openings 4l and 42 with a source of supply of a cooling liquid or fluid and an exhaust for same or with a heating Huid such as the exhaust gases from the engine cylinders, the former being preferable during hot weather and the latter during very cold weather.

The operation-,pf the carbureter will be very easily understood from the foregoing specification.v The several openings closed by the plates 18 are provided so that the inlet valve 22'may be mounted in that part of the air chamber which is vmost conveniently located depending upon the location of the carbureter in a vehicle, for example, said plates 18 being interchangeable with the ring 19 carrying said valve, as will be obvious. The amount of hydro-carbon or other suitable means'y to effect a fiuid-tr'ght joint. The annular liquid fed from the nozzle will depend, of course, upon the degree of vacuum in the air chamber 12 and parts connected therewith. This ,degree of vacuum is primarily regulated by the position of the valve 17 and further by' the degreey of compression exer cised by the spring 23. When said valve 17 is entirely closed no air will be admitted to the air chamber 12 except through the opening controlled bv the valve 22. 'To open said valve and admit air a certain degree of vacuum must be attained in the air chamber 12, and agreater degree of Vacuum will obviously cause the valve 7 to open more fully thereby causing the discharge of a greater quantity of hydro-car-v to start the engine as at such times a primary impulse of maximum force is desirable for obviousyreasons. The said valve 17 is provided on its stem 43 with a crank 44 by means of which the same is suitably connected with an operating lever tor-controlling said valve.

The opnositelv trained helical air passages coact with each other and with the central air passage to ei'ect a very thorough and intimate commingling of all air and vapor so that uniformly carbureted air only will be admitted to the engine cylinders.

I claim as my invention:

l. A carbureter comprising an air chamber having an air inlet port, a valve controlling the same, a s ring maintaining said valve normally close an air inlet passage adjacent said air chamber and communicating therewith, a manually operated valve controlling said passage, a discharge nozzle lfor hydro-carbon liquid disposed in said passage, a valve controlling the same maintained normally closed by a spring, a throttle valve in the discharge end of said air chamber, there being a plurality of concentric air passages between said chamber and saidA valve-controlled discharge end thereof, and oppositely trained helical ribs in two of said air passages adapted to promote intimate comminvling of air and vapor during passage therethrough and through the discharge end of said air chamber.

2. carbureter comprising an air chamber provided between its inlet and discharge ends with a plurality of concentric air passages, a helical rib in at least one of said passages, a normally closed spring actuated valve controlling the air inlet port to said air chamber, an air inlet duct contiguous to the inlet end of said air chamber and aliases communicating therewith, a manually 0perable valve controlling' said duct, a dien charge nozzle for h dre-carbon liquid disposed within said uct, a normally closed spring-actuated valve controllin the mouth of said mezzle, means operable rom the exerior of 1he casing for adjusting the pressure exerted by the springs controlling the last-named valve and the first-named valve respectively, and a manually operable labret-l tle valve controlling the discharging end of said easingg 3., Iii a carbureler, :leasing provided in one end. with an air chamber and terminal" ing at its other end in a delivery passage for carbureted air, a, throttle valve controlling said passage, a plurality of concentric tubular members disposed between said air chamber and said delivery passage, helical ribs carried by tivo ef said tubular members and opposilely disposed relatively to each other, a jaclret for a heating er cooling fluid surrounding the outer of said passages, an air lmet duce contiguous to said air cham ber and communicating at its delivery enel with the latter, a manually operable valve controlling said duet, a valvecontrolled discharge nozzle for hydro-carbon liquid disposed izu the said duct, au air inlet port for said air chamber, and a normally closed spring actuated valve controlling said inleil para 4. In a carbureter, a casing provlded at one end with an air chamber, and at its other end with a delivery passage for carbureted air, there being a passage of greater dialneser than. said delivery passage between the laitier and said air chamber, a plurality of concentric tubular members disposed in said .intermediate passage, the largest thereof corresponding in` diamete with said delivery passage and being provided at one end with :in annular Harige equal in diameter to said `intermediaue assage and between which and the opposing wall of said interme.- diete passage an annular jacket for a heating or cooling fluid is formed, helical ribs carried by two of elle said concentric tubular members, said helical. ribs oppcsitely disposed relatively to each ether, a valve contrclled inlel; for air 50 said air chamlver,y and an air inletprovided with an .inlet for a hydro-carbcn uid thereto.

In testimony whereof l have signed my in presence ci tivo subscribing;` witmesses,

WlLLlAllzl P2 HUGUELET. Witnesses:

RUDOLPH WM. Lora, Meis Bona GER e537 aflareaclag the Gemvressiomer et rateats, 

